Grades
Bonus lift on the mean
The bonus total is diluted by the course count. A 2.5 bonus total over five courses lifts the mean by 0.5; the same 2.5 over ten courses would lift it by only 0.25.
The Formula
Lift = total bonus points / number of courses
The bonus total is diluted by the course count. A 2.5 bonus total over five courses lifts the mean by 0.5; the same 2.5 over ten courses would lift it by only 0.25.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| B | Total bonus points across the term | points | 2.5 in the worked set, built from 1.0 + 1.0 + 0.5. |
| n | Number of courses | courses | The divisor that dilutes the bonus; 5 here. |
What Each Symbol Means
Bpoints
Total bonus points across the term
2.5 in the worked set, built from 1.0 + 1.0 + 0.5.
ncourses
Number of courses
The divisor that dilutes the bonus; 5 here.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to calculate a weighted gpa page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Calculate A Weighted GPA, filed under Education. Every number the guide produces comes from substituting into this one line.